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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none;">T_do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none;">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none;">DoOcrMultiClassCnn</span><span data-if="python" style="display:none;">do_ocr_multi_class_cnn</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none;">T_do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none;">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none;">DoOcrMultiClassCnn</span><span data-if="python" style="display:none;">do_ocr_multi_class_cnn</span></code> — Classify multiple characters with an CNN-based OCR classifier.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>do_ocr_multi_class_cnn</b>(<a href="#Character"><i>Character</i></a>, <a href="#Image"><i>Image</i></a> :  : <a href="#OCRHandle"><i>OCRHandle</i></a> : <a href="#Class"><i>Class</i></a>, <a href="#Confidence"><i>Confidence</i></a>)</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_do_ocr_multi_class_cnn</b>(const Hobject <a href="#Character"><i>Character</i></a>, const Hobject <a href="#Image"><i>Image</i></a>, const Htuple <a href="#OCRHandle"><i>OCRHandle</i></a>, Htuple* <a href="#Class"><i>Class</i></a>, Htuple* <a href="#Confidence"><i>Confidence</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>DoOcrMultiClassCnn</b>(const HObject&amp; <a href="#Character"><i>Character</i></a>, const HObject&amp; <a href="#Image"><i>Image</i></a>, const HTuple&amp; <a href="#OCRHandle"><i>OCRHandle</i></a>, HTuple* <a href="#Class"><i>Class</i></a>, HTuple* <a href="#Confidence"><i>Confidence</i></a>)</code></p>
<p>
<code><a href="HTuple.html">HTuple</a> <a href="HRegion.html">HRegion</a>::<b>DoOcrMultiClassCnn</b>(const HImage&amp; <a href="#Image"><i>Image</i></a>, const HOCRCnn&amp; <a href="#OCRHandle"><i>OCRHandle</i></a>, HTuple* <a href="#Confidence"><i>Confidence</i></a>) const</code></p>
<p>
<code>HString <a href="HRegion.html">HRegion</a>::<b>DoOcrMultiClassCnn</b>(const HImage&amp; <a href="#Image"><i>Image</i></a>, const HOCRCnn&amp; <a href="#OCRHandle"><i>OCRHandle</i></a>, double* <a href="#Confidence"><i>Confidence</i></a>) const</code></p>
<p>
<code><a href="HTuple.html">HTuple</a> <a href="HOCRCnn.html">HOCRCnn</a>::<b>DoOcrMultiClassCnn</b>(const HRegion&amp; <a href="#Character"><i>Character</i></a>, const HImage&amp; <a href="#Image"><i>Image</i></a>, HTuple* <a href="#Confidence"><i>Confidence</i></a>) const</code></p>
<p>
<code>HString <a href="HOCRCnn.html">HOCRCnn</a>::<b>DoOcrMultiClassCnn</b>(const HRegion&amp; <a href="#Character"><i>Character</i></a>, const HImage&amp; <a href="#Image"><i>Image</i></a>, double* <a href="#Confidence"><i>Confidence</i></a>) const</code></p>
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<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>DoOcrMultiClassCnn</b>(<a href="HObject.html">HObject</a> <a href="#Character"><i>character</i></a>, <a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, <a href="HTuple.html">HTuple</a> <a href="#OCRHandle"><i>OCRHandle</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Class"><i>classVal</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Confidence"><i>confidence</i></a>)</code></p>
<p>
<code><a href="HTuple.html">HTuple</a> <a href="HRegion.html">HRegion</a>.<b>DoOcrMultiClassCnn</b>(<a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>, <a href="HOCRCnn.html">HOCRCnn</a> <a href="#OCRHandle"><i>OCRHandle</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Confidence"><i>confidence</i></a>)</code></p>
<p>
<code>string <a href="HRegion.html">HRegion</a>.<b>DoOcrMultiClassCnn</b>(<a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>, <a href="HOCRCnn.html">HOCRCnn</a> <a href="#OCRHandle"><i>OCRHandle</i></a>, out double <a href="#Confidence"><i>confidence</i></a>)</code></p>
<p>
<code><a href="HTuple.html">HTuple</a> <a href="HOCRCnn.html">HOCRCnn</a>.<b>DoOcrMultiClassCnn</b>(<a href="HRegion.html">HRegion</a> <a href="#Character"><i>character</i></a>, <a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Confidence"><i>confidence</i></a>)</code></p>
<p>
<code>string <a href="HOCRCnn.html">HOCRCnn</a>.<b>DoOcrMultiClassCnn</b>(<a href="HRegion.html">HRegion</a> <a href="#Character"><i>character</i></a>, <a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>, out double <a href="#Confidence"><i>confidence</i></a>)</code></p>
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<div data-if="python" style="display:none;">
<p>
<code>def <b>do_ocr_multi_class_cnn</b>(<a href="#Character"><i>character</i></a>: HObject, <a href="#Image"><i>image</i></a>: HObject, <a href="#OCRHandle"><i>ocrhandle</i></a>: HHandle) -&gt; Tuple[Sequence[str], Sequence[float]]</code></p>
<p>
<code>def <b>do_ocr_multi_class_cnn_s</b>(<a href="#Character"><i>character</i></a>: HObject, <a href="#Image"><i>image</i></a>: HObject, <a href="#OCRHandle"><i>ocrhandle</i></a>: HHandle) -&gt; Tuple[str, float]</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none">do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none">DoOcrMultiClassCnn</span><span data-if="com" style="display:none">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none">DoOcrMultiClassCnn</span><span data-if="python" style="display:none">do_ocr_multi_class_cnn</span></code> computes the best class for each of
the characters given by the regions <a href="#Character"><i><code><span data-if="hdevelop" style="display:inline">Character</span><span data-if="c" style="display:none">Character</span><span data-if="cpp" style="display:none">Character</span><span data-if="com" style="display:none">Character</span><span data-if="dotnet" style="display:none">character</span><span data-if="python" style="display:none">character</span></code></i></a> and the gray
values <a href="#Image"><i><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></i></a> with the OCR classifier <a href="#OCRHandle"><i><code><span data-if="hdevelop" style="display:inline">OCRHandle</span><span data-if="c" style="display:none">OCRHandle</span><span data-if="cpp" style="display:none">OCRHandle</span><span data-if="com" style="display:none">OCRHandle</span><span data-if="dotnet" style="display:none">OCRHandle</span><span data-if="python" style="display:none">ocrhandle</span></code></i></a> and
returns the classes in <a href="#Class"><i><code><span data-if="hdevelop" style="display:inline">Class</span><span data-if="c" style="display:none">Class</span><span data-if="cpp" style="display:none">Class</span><span data-if="com" style="display:none">Class</span><span data-if="dotnet" style="display:none">classVal</span><span data-if="python" style="display:none">class</span></code></i></a> and the corresponding
confidences (probabilities) of the classes in <a href="#Confidence"><i><code><span data-if="hdevelop" style="display:inline">Confidence</span><span data-if="c" style="display:none">Confidence</span><span data-if="cpp" style="display:none">Confidence</span><span data-if="com" style="display:none">Confidence</span><span data-if="dotnet" style="display:none">confidence</span><span data-if="python" style="display:none">confidence</span></code></i></a>.
</p>
<p>In contrast to <a href="do_ocr_single_class_cnn.html"><code><span data-if="hdevelop" style="display:inline">do_ocr_single_class_cnn</span><span data-if="c" style="display:none">do_ocr_single_class_cnn</span><span data-if="cpp" style="display:none">DoOcrSingleClassCnn</span><span data-if="com" style="display:none">DoOcrSingleClassCnn</span><span data-if="dotnet" style="display:none">DoOcrSingleClassCnn</span><span data-if="python" style="display:none">do_ocr_single_class_cnn</span></code></a>,
<code><span data-if="hdevelop" style="display:inline">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none">do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none">DoOcrMultiClassCnn</span><span data-if="com" style="display:none">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none">DoOcrMultiClassCnn</span><span data-if="python" style="display:none">do_ocr_multi_class_cnn</span></code> can classify multiple characters in
one call, and therefore typically is faster than a loop that uses
<a href="do_ocr_single_class_cnn.html"><code><span data-if="hdevelop" style="display:inline">do_ocr_single_class_cnn</span><span data-if="c" style="display:none">do_ocr_single_class_cnn</span><span data-if="cpp" style="display:none">DoOcrSingleClassCnn</span><span data-if="com" style="display:none">DoOcrSingleClassCnn</span><span data-if="dotnet" style="display:none">DoOcrSingleClassCnn</span><span data-if="python" style="display:none">do_ocr_single_class_cnn</span></code></a> to classify single characters.
However, <code><span data-if="hdevelop" style="display:inline">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none">do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none">DoOcrMultiClassCnn</span><span data-if="com" style="display:none">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none">DoOcrMultiClassCnn</span><span data-if="python" style="display:none">do_ocr_multi_class_cnn</span></code> can only return the best
class of each character. Because the confidences can be interpreted as
probabilities, it is easier to check whether a character has been
classified with too much uncertainty. This is usually not a disadvantage,
except in cases where the classes overlap so much that in many cases the
second best class must be examined to be able to decide the class of the
character. In these cases, <a href="do_ocr_single_class_cnn.html"><code><span data-if="hdevelop" style="display:inline">do_ocr_single_class_cnn</span><span data-if="c" style="display:none">do_ocr_single_class_cnn</span><span data-if="cpp" style="display:none">DoOcrSingleClassCnn</span><span data-if="com" style="display:none">DoOcrSingleClassCnn</span><span data-if="dotnet" style="display:none">DoOcrSingleClassCnn</span><span data-if="python" style="display:none">do_ocr_single_class_cnn</span></code></a> should be used.
</p>
<p>A string of the number
<i><span data-if="hdevelop" style="display:inline">'\032'</span><span data-if="c" style="display:none">"\032"</span><span data-if="cpp" style="display:none">"\032"</span><span data-if="com" style="display:none">"\032"</span><span data-if="dotnet" style="display:none">"\032"</span><span data-if="python" style="display:none">"\032"</span></i> (alternatively
displayed as <i><span data-if="hdevelop" style="display:inline">'\0x1A'</span><span data-if="c" style="display:none">"\0x1A"</span><span data-if="cpp" style="display:none">"\0x1A"</span><span data-if="com" style="display:none">"\0x1A"</span><span data-if="dotnet" style="display:none">"\0x1A"</span><span data-if="python" style="display:none">"\0x1A"</span></i>) in
<a href="#Class"><i><code><span data-if="hdevelop" style="display:inline">Class</span><span data-if="c" style="display:none">Class</span><span data-if="cpp" style="display:none">Class</span><span data-if="com" style="display:none">Class</span><span data-if="dotnet" style="display:none">classVal</span><span data-if="python" style="display:none">class</span></code></i></a> signifies that the region has been classified as rejection
class.
</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  
    <li>Automatically parallelized on internal data level.</li>
  
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Character" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Character</span><span data-if="c" style="display:none">Character</span><span data-if="cpp" style="display:none">Character</span><span data-if="com" style="display:none">Character</span><span data-if="dotnet" style="display:none">character</span><span data-if="python" style="display:none">character</span></code></b> (input_object)  </span><span>region(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="c" style="display:none">Hobject</span></span>
</div>
<p class="pardesc">Characters to be recognized.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>singlechannelimage <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / uint2)</span>
</div>
<p class="pardesc">Gray values of the characters.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="OCRHandle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">OCRHandle</span><span data-if="c" style="display:none">OCRHandle</span><span data-if="cpp" style="display:none">OCRHandle</span><span data-if="com" style="display:none">OCRHandle</span><span data-if="dotnet" style="display:none">OCRHandle</span><span data-if="python" style="display:none">ocrhandle</span></code></b> (input_control)  </span><span>ocr_cnn <code>→</code> <span data-if="dotnet" style="display:none"><a href="HOCRCnn.html">HOCRCnn</a>, </span><span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">HHandle</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (handle)</span><span data-if="dotnet" style="display:none"> (<i>IntPtr</i>)</span><span data-if="cpp" style="display:none"> (<i>HHandle</i>)</span><span data-if="c" style="display:none"> (<i>handle</i>)</span></span>
</div>
<p class="pardesc">Handle of the OCR classifier.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Class" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Class</span><span data-if="c" style="display:none">Class</span><span data-if="cpp" style="display:none">Class</span><span data-if="com" style="display:none">Class</span><span data-if="dotnet" style="display:none">classVal</span><span data-if="python" style="display:none">class</span></code></b> (output_control)  </span><span>string(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Sequence[str]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Result of classifying the characters with the
CNN.</p>
<p class="pardesc"><span class="parcat">Number of elements:
      </span>Class == Character</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Confidence" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Confidence</span><span data-if="c" style="display:none">Confidence</span><span data-if="cpp" style="display:none">Confidence</span><span data-if="com" style="display:none">Confidence</span><span data-if="dotnet" style="display:none">confidence</span><span data-if="python" style="display:none">confidence</span></code></b> (output_control)  </span><span>real(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Sequence[float]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real)</span><span data-if="dotnet" style="display:none"> (<i>double</i>)</span><span data-if="cpp" style="display:none"> (<i>double</i>)</span><span data-if="c" style="display:none"> (<i>double</i>)</span></span>
</div>
<p class="pardesc">Confidence of the class of the characters.</p>
<p class="pardesc"><span class="parcat">Number of elements:
      </span>Confidence == Character</p>
</div>
<h2 id="sec_result">结果</h2>
<p>如果参数均有效，算子
<code><span data-if="hdevelop" style="display:inline">do_ocr_multi_class_cnn</span><span data-if="c" style="display:none">do_ocr_multi_class_cnn</span><span data-if="cpp" style="display:none">DoOcrMultiClassCnn</span><span data-if="com" style="display:none">DoOcrMultiClassCnn</span><span data-if="dotnet" style="display:none">DoOcrMultiClassCnn</span><span data-if="python" style="display:none">do_ocr_multi_class_cnn</span></code> 返回值 <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .  If
necessary, an exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="read_ocr_class_cnn.html"><span data-if="hdevelop" style="display:inline">read_ocr_class_cnn</span><span data-if="c" style="display:none">read_ocr_class_cnn</span><span data-if="cpp" style="display:none">ReadOcrClassCnn</span><span data-if="com" style="display:none">ReadOcrClassCnn</span><span data-if="dotnet" style="display:none">ReadOcrClassCnn</span><span data-if="python" style="display:none">read_ocr_class_cnn</span></a></code>
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="do_ocr_word_cnn.html"><span data-if="hdevelop" style="display:inline">do_ocr_word_cnn</span><span data-if="c" style="display:none">do_ocr_word_cnn</span><span data-if="cpp" style="display:none">DoOcrWordCnn</span><span data-if="com" style="display:none">DoOcrWordCnn</span><span data-if="dotnet" style="display:none">DoOcrWordCnn</span><span data-if="python" style="display:none">do_ocr_word_cnn</span></a></code>, 
<code><a href="do_ocr_single_class_cnn.html"><span data-if="hdevelop" style="display:inline">do_ocr_single_class_cnn</span><span data-if="c" style="display:none">do_ocr_single_class_cnn</span><span data-if="cpp" style="display:none">DoOcrSingleClassCnn</span><span data-if="com" style="display:none">DoOcrSingleClassCnn</span><span data-if="dotnet" style="display:none">DoOcrSingleClassCnn</span><span data-if="python" style="display:none">do_ocr_single_class_cnn</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
OCR/OCV</p>
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